Considering the Mercure Nantes Nord in Nantes?
A VT member wrote the following comment about visiting Nantes:
Notice the Porte St.-Pierre by hquittner
Up the street along the North side of the Cathedral (r. de l'Eveche) one sees the Porte. St.-Pierre, a 15C gateway built on the remains of a Gallo-Roman wall. On one side an old turreted residence is also incorporated into it.